The Model S P90D is dead, but at least there's a new glass roof option to keep buyers intrigued.

In Tesla’s continued pursuit of building the ultimate lineup of electric vehicles, the company has quietly discontinued the Model S P90D trim on its website. In a likely effort to streamline the range, the loss of the P90D is expected to give way to a new 100D variant, closing the near $45,000 price gap currently seen between the 90D and P100D.

The 90D, with a final retail price of $92,000, features a 294-mile (473-kilometer) range and a 4.2 second 0-60 mph (0-96 kmh) run. It’s a far cry from the $134,500 retail price of the next level P100D, which features a range of 315 miles (506-km) and a 0-60 mph (0-96 kmh) time of just 2.5 seconds. Neither prices reflect the yet-to-be-confirmed $2,000 price hike expected for the base Model S 60.

Along with the death of the P90D, Tesla has also added a few new features to its online configurator in hopes of drumming up even more interest. “Ludicrous” mode now comes standard on its “P” performance models, of which the P100D is the only one currently available to buyers (for now).

But the most noticeable new option comes in the form of a $1,500 glass roof. It replaces the smaller sunroof option that was previously available for the same price, but keeps the larger, panoramic sunroof option available for just $500 more ($2,000). Though no exact specifics have been given on this new roof, it’s safe to assume that it will feature the same UV blocking technology available on the Model X; protecting drivers from 98 percent of UV rays and 81 percent of heat.

The new glass roof, Tesla says, is “recommended for an open, expansive cabin feel.” Removing the crossbar over the vehicle’s B-pillar, it should make the Model S feel more spacious than before. First solar roof deplyoments will also begin next summer.